/* ============================================
   AUTH PAGES - Fluid Responsive Design
   Napojeno na globální design systém (barvy.css + main.css)
   ============================================ */

/* Import globálních barev */
@import '../barvy.css';

/* ============================================
   1. BASE LAYOUT - Fluid, no scroll needed
   ============================================ */
body.auth-page {
    margin: 0;
    padding: clamp(0.5rem, 2vh, 1.5rem);
    min-height: 100vh;
    min-height: 100dvh; /* Dynamic viewport - respektuje klávesnici */
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: var(--seda-50);
    overflow-x: hidden;
    overflow-y: auto; /* Povolit scroll pouze když nutné */
    box-sizing: border-box;
}

/* ============================================
   2. LOGIN CONTAINER - Fluid sizing
   ============================================ */
.login-container {
    background: var(--bila);
    border-radius: clamp(16px, 3vw, 30px);
    box-shadow: var(--stiny-xl);
    padding: clamp(1rem, 4vw, 2.5rem);
    width: min(100% - 1rem, 450px);
    position: relative;
    z-index: 1;
    animation: slideUp 0.6s ease-out;
    flex-shrink: 0;
}

body.dark-theme .login-container {
    background: #2d2d2d;
    color: var(--seda-100);
    box-shadow: 0 15px 50px rgba(0,0,0,0.5);
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ============================================
   3. LOGIN HEADER - Fluid typography
   ============================================ */
.login-header {
    text-align: center;
    margin-bottom: clamp(0.75rem, 3vw, 2.5rem);
}

.login-logo {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin-bottom: clamp(0.5rem, 2vw, 1.5rem);
}

.login-logo img {
    height: clamp(40px, 10vw, 80px);
    width: auto;
    filter: drop-shadow(0 10px 30px rgba(196, 30, 58, 0.3));
    transition: var(--prechod-normalni);
}

.login-logo img:hover {
    filter: drop-shadow(0 12px 35px rgba(196, 30, 58, 0.4));
    transform: translateY(-2px);
}

.login-title {
    font-size: clamp(1.25rem, 4vw, 2rem);
    font-weight: 700;
    color: var(--cerna);
    margin: 0 0 clamp(0.25rem, 1vw, 0.5rem) 0;
}

body.dark-theme .login-title {
    color: var(--bila);
}

.login-subtitle {
    font-size: clamp(0.85rem, 2.5vw, 1.1rem);
    color: var(--seda-600);
    margin: 0;
    line-height: 1.4;
}

body.dark-theme .login-subtitle {
    color: var(--seda-400);
}

/* ============================================
   4. FORM STYLING - Fluid spacing
   ============================================ */
.login-form {
    margin-top: clamp(0.75rem, 2vw, 1.5rem);
}

.form-group {
    margin-bottom: clamp(0.625rem, 2vw, 1.25rem);
}

.form-label {
    display: block;
    margin-bottom: clamp(0.25rem, 1vw, 0.5rem);
    font-weight: 600;
    color: var(--cerna);
    font-size: clamp(0.8rem, 2vw, 0.95rem);
}

body.dark-theme .form-label {
    color: var(--bila);
}

.label-hint {
    color: var(--seda-500);
    font-weight: 400;
    font-size: clamp(0.75rem, 1.8vw, 0.85rem);
}

body.dark-theme .label-hint {
    color: var(--seda-400);
}

.form-input {
    width: 100%;
    padding: clamp(0.625rem, 2vw, 1rem);
    border: 2px solid var(--seda-200);
    border-radius: clamp(8px, 1.5vw, 12px);
    font-size: clamp(0.9rem, 2.5vw, 1rem);
    transition: var(--prechod-normalni);
    background: var(--seda-50);
    color: var(--cerna);
    min-height: clamp(44px, 6vh, 52px); /* Touch-friendly */
    box-sizing: border-box;
}

.form-input:focus {
    outline: none;
    border-color: var(--cervena-hlavni);
    background: var(--bila);
    box-shadow: 0 0 0 3px rgba(196, 30, 58, 0.1);
}

.form-input::placeholder {
    color: var(--seda-400);
}

body.dark-theme .form-input {
    background: #4a5568;
    border-color: #4a5568;
    color: var(--bila);
}

body.dark-theme .form-input:focus {
    background: #2d3748;
    border-color: var(--cervena-hlavni);
}

body.dark-theme .form-input::placeholder {
    color: var(--seda-500);
}

.form-input.error {
    border-color: var(--chyba);
    background: #fef2f2;
    animation: shake 0.5s ease-in-out;
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-5px); }
    75% { transform: translateX(5px); }
}

.field-hint {
    font-size: clamp(0.7rem, 1.8vw, 0.875rem);
    color: var(--seda-500);
    margin-top: clamp(0.125rem, 0.5vw, 0.25rem);
    display: flex;
    align-items: center;
    gap: var(--mezera-xs);
}

body.dark-theme .field-hint {
    color: var(--seda-400);
}

/* ============================================
   5. ERROR MESSAGES
   ============================================ */
.error-message {
    display: none;
    color: var(--chyba);
    font-size: clamp(0.75rem, 2vw, 0.875rem);
    margin-top: clamp(0.25rem, 1vw, 0.5rem);
    align-items: center;
    gap: 0.3rem;
    font-weight: 500;
}

.error-message.show {
    display: flex;
    animation: slideDown var(--prechod-normalni);
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Alert messages (z controlleru) */
.alert-message {
    padding: clamp(0.625rem, 2vw, 1rem);
    margin-bottom: clamp(0.625rem, 2vw, 1rem);
    border-radius: var(--zaobleni-md);
    display: flex;
    align-items: center;
    gap: clamp(0.5rem, 1.5vw, 0.75rem);
    font-weight: 500;
    font-size: clamp(0.8rem, 2vw, 0.95rem);
}

.alert-error {
    background: #fef2f2;
    border-left: 4px solid var(--chyba);
    color: #dc2626;
}

.alert-success {
    background: #f0fdf4;
    border-left: 4px solid var(--uspech);
    color: #15803d;
}

.alert-info {
    background: #eff6ff;
    border-left: 4px solid var(--info);
    color: #1d4ed8;
}

/* ============================================
   6. LOGIN BUTTON - Fluid
   ============================================ */
.login-button {
    width: 100%;
    padding: clamp(0.75rem, 2vw, 0.9rem) clamp(1rem, 3vw, 1.2rem);
    background: var(--gradient-cerveny);
    color: var(--bila);
    border: none;
    border-radius: clamp(8px, 1.5vw, 12px);
    font-size: clamp(0.9rem, 2.5vw, 1.05rem);
    font-weight: 600;
    cursor: pointer;
    transition: var(--prechod-normalni);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    position: relative;
    overflow: hidden;
    box-shadow: var(--stiny-md);
    min-height: clamp(44px, 6vh, 52px);
    margin-top: clamp(0.5rem, 1.5vw, 0.75rem);
}

.login-button::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
    transition: left 0.6s;
}

.login-button:hover {
    transform: translateY(-2px);
    box-shadow: var(--stiny-lg);
}

.login-button:hover::before {
    left: 100%;
}

.login-button:active {
    transform: translateY(0);
}

.login-button:disabled {
    opacity: 0.7;
    cursor: not-allowed;
    transform: none;
}

.button-text {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: clamp(0.375rem, 1vw, 0.5rem);
    transition: var(--prechod-rychly);
}

/* ============================================
   7. LOADING SPINNER
   ============================================ */
.loading-spinner {
    display: none;
    width: 20px;
    height: 20px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-right: var(--mezera-sm);
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.login-button.loading .loading-spinner {
    display: inline-block;
}

.login-button.loading .button-text {
    opacity: 0.8;
}

/* ============================================
   8. DIVIDER
   ============================================ */
.divider {
    display: flex;
    align-items: center;
    margin: clamp(0.625rem, 2vw, 1rem) 0;
    color: var(--seda-500);
    font-size: clamp(0.8rem, 2vw, 0.9rem);
    font-weight: 500;
}

.divider::before,
.divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--seda-200), transparent);
}

.divider span {
    padding: 0 clamp(0.75rem, 2vw, 1rem);
    background: var(--bila);
    position: relative;
    z-index: 1;
}

body.dark-theme .divider span {
    background: #2d2d2d;
    color: var(--seda-400);
}

/* ============================================
   9. GUEST BUTTON
   ============================================ */
.guest-button {
    width: 100%;
    padding: clamp(0.625rem, 2vw, 0.8rem) clamp(0.875rem, 2.5vw, 1.2rem);
    background: var(--bila);
    color: var(--seda-600);
    border: 2px solid var(--seda-200);
    border-radius: clamp(8px, 1.5vw, 12px);
    font-size: clamp(0.85rem, 2.5vw, 0.95rem);
    font-weight: 600;
    cursor: pointer;
    transition: var(--prechod-normalni);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--mezera-sm);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    min-height: clamp(44px, 6vh, 48px);
}

.guest-button:hover {
    border-color: var(--cervena-hlavni);
    color: var(--cervena-hlavni);
    background: #fef2f2;
    transform: translateY(-1px);
    box-shadow: var(--stiny-sm);
}

.guest-button i {
    opacity: 0.8;
}

body.dark-theme .guest-button {
    background: #4a5568;
    color: var(--seda-300);
    border-color: #4a5568;
}

body.dark-theme .guest-button:hover {
    background: #2d3748;
    border-color: var(--cervena-hlavni);
    color: var(--cervena-hlavni);
}

/* ============================================
   10. INVITE TOGGLE BUTTON
   ============================================ */
.login-options {
    margin-top: clamp(0.625rem, 2vw, 1rem);
    text-align: center;
}

.invite-toggle-btn {
    width: 100%;
    padding: clamp(0.5rem, 1.5vw, 0.6rem) clamp(0.75rem, 2vw, 1rem);
    background: linear-gradient(135deg, var(--seda-50) 0%, var(--seda-200) 100%);
    color: var(--seda-600);
    border: 2px solid var(--seda-200);
    border-radius: var(--zaobleni-md);
    font-size: clamp(0.8rem, 2vw, 0.9rem);
    font-weight: 500;
    cursor: pointer;
    transition: var(--prechod-normalni);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: clamp(0.25rem, 0.75vw, 0.375rem);
    position: relative;
    overflow: hidden;
    min-height: clamp(40px, 5vh, 44px);
}

.invite-toggle-btn:hover {
    background: linear-gradient(135deg, var(--modra-hlavni) 0%, #1d4ed8 100%);
    color: var(--bila);
    border-color: var(--modra-hlavni);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(59, 130, 246, 0.3);
}

.invite-toggle-btn.active {
    background: linear-gradient(135deg, var(--chyba) 0%, #dc2626 100%);
    color: var(--bila);
    border-color: var(--chyba);
}

.invite-toggle-btn.active:hover {
    background: linear-gradient(135deg, #dc2626 0%, #b91c1c 100%);
    border-color: #dc2626;
    box-shadow: 0 8px 25px rgba(239, 68, 68, 0.3);
}

.invite-toggle-btn i {
    font-size: clamp(0.75rem, 1.8vw, 0.9rem);
    opacity: 0.8;
}

body.dark-theme .invite-toggle-btn {
    background: linear-gradient(135deg, #4a5568 0%, #2d3748 100%);
    color: var(--seda-300);
    border-color: #4a5568;
}

body.dark-theme .invite-toggle-btn:hover {
    background: linear-gradient(135deg, var(--modra-hlavni) 0%, #1d4ed8 100%);
    color: var(--bila);
    border-color: var(--modra-hlavni);
}

/* ============================================
   11. AUTH FOOTER - Fluid
   ============================================ */
.login-footer,
.auth-footer {
    text-align: center;
    margin-top: clamp(0.5rem, 2vw, 1.5rem);
    padding-top: clamp(0.5rem, 1.5vw, 1rem);
    color: var(--seda-500);
    font-size: clamp(0.6rem, 1.5vw, 0.85rem);
    flex-shrink: 0;
}

body.dark-theme .login-footer,
body.dark-theme .auth-footer {
    color: var(--seda-400);
}

/* Desktop - fixed footer */
@media (min-width: 600px) {
    .auth-footer {
        position: fixed;
        bottom: clamp(10px, 2vh, 20px);
        left: 50%;
        transform: translateX(-50%);
        margin-top: 0;
        padding: 0;
    }
}

/* ============================================
   12. PHASE 2 REGISTRATION - Compact fluid
   ============================================ */

/* Email summary */
.email-summary {
    display: flex;
    align-items: center;
    gap: clamp(0.5rem, 1.5vw, 0.75rem);
    padding: clamp(0.5rem, 1.5vw, 0.875rem);
    background: linear-gradient(135deg, #f0fdf4 0%, #dcfce7 100%);
    border: 1px solid #86efac;
    border-radius: var(--zaobleni-lg);
    margin-bottom: clamp(0.5rem, 1.5vw, 1rem);
}

.email-summary .summary-icon {
    flex-shrink: 0;
    width: clamp(24px, 4vw, 32px);
    height: clamp(24px, 4vw, 32px);
    display: flex;
    align-items: center;
    justify-content: center;
    background: #22c55e;
    color: white;
    border-radius: 50%;
    font-size: clamp(0.7rem, 1.5vw, 0.9rem);
}

.email-summary .summary-content {
    flex: 1;
    min-width: 0;
}

.email-summary .summary-label {
    display: block;
    font-size: clamp(0.6rem, 1.2vw, 0.75rem);
    color: #166534;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.email-summary .summary-email {
    display: block;
    font-size: clamp(0.85rem, 2vw, 1rem);
    font-weight: 600;
    color: #15803d;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.email-summary .summary-edit-btn {
    flex-shrink: 0;
    width: clamp(28px, 4vw, 36px);
    height: clamp(28px, 4vw, 36px);
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: 1px solid #86efac;
    border-radius: var(--zaobleni-md);
    color: #15803d;
    cursor: pointer;
    transition: var(--prechod-rychly);
    font-size: clamp(0.7rem, 1.5vw, 0.85rem);
}

.email-summary .summary-edit-btn:hover {
    background: #dcfce7;
    border-color: #22c55e;
    color: #166534;
}

/* Dark theme email summary */
body.dark-theme .email-summary {
    background: linear-gradient(135deg, #052e16 0%, #14532d 100%);
    border-color: #166534;
}

body.dark-theme .email-summary .summary-label {
    color: #86efac;
}

body.dark-theme .email-summary .summary-email {
    color: #4ade80;
}

body.dark-theme .email-summary .summary-edit-btn {
    border-color: #166534;
    color: #4ade80;
}

body.dark-theme .email-summary .summary-edit-btn:hover {
    background: #14532d;
    border-color: #22c55e;
}

/* Compact mode for Phase 2 */
.login-container.phase-2-compact {
    padding: clamp(0.75rem, 3vw, 1.5rem);
}

.login-container.phase-2-compact .login-form {
    margin-top: 0;
}

/* Phase 2 section container */
.phase-2-section {
    margin-top: clamp(0.25rem, 1vw, 0.5rem);
    padding-top: 0;
    border-top: none;
    animation: slideDown 0.3s ease-out;
}

/* Compact form groups in Phase 2 */
.phase-2-section .form-group {
    margin-bottom: clamp(0.375rem, 1.25vw, 0.625rem);
}

.phase-2-section .form-label {
    font-size: clamp(0.75rem, 1.8vw, 0.875rem);
    margin-bottom: clamp(0.125rem, 0.5vw, 0.25rem);
}

.phase-2-section .form-input {
    padding: clamp(0.5rem, 1.5vw, 0.75rem);
    min-height: clamp(40px, 5vh, 44px);
    font-size: clamp(0.875rem, 2.2vw, 0.95rem);
}

.phase-2-section .field-hint {
    font-size: clamp(0.65rem, 1.5vw, 0.75rem);
    margin-top: clamp(0.0625rem, 0.25vw, 0.125rem);
}

/* Hide the phase title */
.phase-2-section .phase-divider {
    display: none;
}

/* Phase divider with title */
.phase-divider {
    display: flex;
    align-items: center;
    margin-bottom: clamp(0.5rem, 1.5vw, 1rem);
}

.phase-title {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: clamp(0.85rem, 2vw, 0.95rem);
    font-weight: 600;
    color: var(--modra-hlavni);
}

.phase-title i {
    font-size: clamp(0.8rem, 1.8vw, 0.9rem);
}

/* Required/Optional field markers */
.required-mark {
    color: var(--chyba);
    font-weight: 600;
    margin-left: 0.25rem;
}

.optional-mark {
    color: var(--seda-400);
    font-size: clamp(0.75rem, 1.8vw, 0.85rem);
    font-weight: 400;
    margin-left: 0.25rem;
}

/* Field warning (CRM ID warning) */
.field-warning {
    display: flex;
    align-items: flex-start;
    gap: clamp(0.375rem, 1vw, 0.5rem);
    margin-top: clamp(0.25rem, 0.75vw, 0.5rem);
    padding: clamp(0.375rem, 1vw, 0.625rem) clamp(0.5rem, 1.25vw, 0.75rem);
    background: rgba(255, 193, 7, 0.1);
    border: 1px solid rgba(255, 193, 7, 0.3);
    border-radius: 8px;
    color: #856404;
    font-size: clamp(0.7rem, 1.8vw, 0.85rem);
    line-height: 1.4;
}

.field-warning i {
    color: #ffc107;
    margin-top: 0.1rem;
    flex-shrink: 0;
    font-size: clamp(0.65rem, 1.5vw, 0.8rem);
}

/* Disabled input styling */
.form-input:disabled {
    background-color: var(--seda-100);
    color: var(--seda-500);
    cursor: not-allowed;
    opacity: 0.7;
}

/* Phase 2 compact button */
.phase-2-compact .login-button {
    padding: clamp(0.5rem, 1.5vw, 0.75rem) clamp(0.75rem, 2vw, 1rem);
    min-height: clamp(40px, 5vh, 48px);
    margin-top: clamp(0.375rem, 1vw, 0.5rem);
}

/* ============================================
   13. ACCESSIBILITY
   ============================================ */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }

    .login-logo img:hover,
    .login-button:hover,
    .invite-toggle-btn:hover {
        transform: none;
    }
}

/* ============================================
   14. LANDSCAPE MOBILE - Extra compact
   ============================================ */
@media (max-height: 500px) and (orientation: landscape) {
    body.auth-page {
        padding: 0.5rem;
        justify-content: flex-start;
    }

    .login-container {
        padding: 0.75rem 1rem;
    }

    .login-header {
        margin-bottom: 0.5rem;
    }

    .login-logo {
        margin-bottom: 0.25rem;
    }

    .login-logo img {
        height: 30px;
    }

    .login-title {
        font-size: 1rem;
    }

    .login-subtitle {
        display: none;
    }

    .form-group {
        margin-bottom: 0.5rem;
    }

    .form-input {
        min-height: 38px;
        padding: 0.5rem;
    }

    .login-button {
        min-height: 40px;
        margin-top: 0.5rem;
    }

    .auth-footer {
        display: none;
    }
}