/**
 * Authentication Styles - Zakat Funds System
 * สำหรับหน้า Login, Register, Forgot Password
 * ใช้ theme สีเดียวกับระบบหลัก (สีเขียว)
 */

/* Import CSS Variables */
@import url('./zakat-style.css');

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans', 'Sarabun', sans-serif;
    background: linear-gradient(135deg, var(--green) 0%, var(--green2) 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    font-size: 16px;
    line-height: 1.6;
}

.auth-container {
    background: white;
    border-radius: var(--radius);
    box-shadow: 0 20px 60px rgba(31, 138, 76, 0.25);
    width: 100%;
    max-width: 450px;
    padding: 40px;
    animation: slideUp 0.5s ease;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.auth-header {
    text-align: center;
    margin-bottom: 30px;
}

.auth-header h1 {
    color: var(--text);
    font-size: 28px;
    margin-bottom: 8px;
    font-weight: 600;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

.auth-header h1 i {
    font-size: 32px;
    color: var(--green);
}

.auth-header p {
    color: var(--muted);
    font-size: 14px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    color: var(--text);
    font-weight: 500;
    font-size: 16px;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid var(--line);
    border-radius: 10px;
    font-size: 14px;
    transition: all 0.3s ease;
    font-family: inherit;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--green);
    box-shadow: 0 0 0 3px rgba(31, 138, 76, 0.1);
}

.password-wrapper {
    position: relative;
}

.password-wrapper input {
    padding-right: 45px;
}

.toggle-password {
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
    color: var(--muted);
    transition: color 0.2s;
}

.toggle-password:hover {
    color: var(--green);
}

.toggle-password svg {
    width: 20px;
    height: 20px;
}

.btn-login,
.btn-register,
.btn-submit {
    width: 100%;
    padding: 14px;
    background: linear-gradient(135deg, var(--green) 0%, var(--green2) 100%);
    color: white;
    border: none;
    border-radius: 10px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-login:hover,
.btn-register:hover,
.btn-submit:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(31, 138, 76, 0.3);
}

.btn-login:active,
.btn-register:active,
.btn-submit:active {
    transform: translateY(0);
}

.btn-login:disabled,
.btn-register:disabled,
.btn-submit:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

.auth-footer {
    text-align: center;
    margin-top: 24px;
    padding-top: 24px;
    border-top: 1px solid var(--line);
}

.auth-footer a {
    color: var(--green);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s;
}

.auth-footer a:hover {
    color: var(--green2);
    text-decoration: underline;
}

.alert {
    padding: 12px 16px;
    border-radius: 10px;
    margin-bottom: 20px;
    font-size: 14px;
    animation: slideDown 0.3s ease;
}

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

.alert-error {
    background: #fee;
    color: #c33;
    border: 1px solid #fcc;
}

.alert-success {
    background: #efe;
    color: #3c3;
    border: 1px solid #cfc;
}

.alert-info {
    background: #e7f5ff;
    color: #0c5a8a;
    border: 1px solid #b3d9f2;
    display: flex;
    align-items: flex-start;
    gap: 10px;
}

.alert-info i {
    font-size: 18px;
    margin-top: 2px;
    flex-shrink: 0;
}

.back-link {
    text-align: center;
    margin-top: 20px;
}

.back-link a {
    color: var(--muted);
    text-decoration: none;
    font-size: 14px;
    transition: color 0.2s;
}

.back-link a:hover {
    color: var(--text);
}

/* Loading Spinner */
.loading {
    display: inline-block;
    width: 16px;
    height: 16px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    margin-left: 8px;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* Register Form Specific Styles */
.auth-container.register {
    max-width: 600px;
}

.form-section {
    margin-bottom: 30px;
}

.form-section-title {
    font-size: 18px;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 16px;
    padding-bottom: 8px;
    border-bottom: 2px solid var(--green);
    display: flex;
    align-items: center;
    gap: 8px;
}

.form-section-title i {
    font-size: 20px;
    color: var(--green);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

/* ให้ช่อง textarea ใน form-row ขยายเต็มความกว้าง */
.form-row .form-group:has(textarea) {
    grid-column: 1 / -1;
}

.form-group label .required {
    color: #e53e3e;
}

.form-group textarea {
    resize: vertical;
    min-height: 80px;
}

#position_other_group {
    display: none;
}

/* Responsive */
@media (max-width: 640px) {
    .form-row {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .auth-container {
        padding: 30px 24px;
    }
    
    .auth-header h1 {
        font-size: 24px;
    }
}

/* ===================================================
   Scroll to Top Button
   =================================================== */
.scroll-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 50px;
  height: 50px;
  background: linear-gradient(135deg, var(--green) 0%, var(--green2) 100%);
  color: #fff;
  border: none;
  border-radius: 50%;
  font-size: 1.2rem;
  cursor: pointer;
  box-shadow: 0 4px 12px rgba(31, 138, 76, 0.3);
  z-index: 999;
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: all 0.3s ease;
}

.scroll-to-top.show {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.scroll-to-top:hover {
  background: linear-gradient(135deg, var(--green2) 0%, var(--green) 100%);
  box-shadow: 0 6px 16px rgba(31, 138, 76, 0.4);
  transform: translateY(-3px);
}

.scroll-to-top:active {
  transform: translateY(-1px);
  box-shadow: 0 3px 8px rgba(31, 138, 76, 0.3);
}

.scroll-to-top i {
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Responsive Scroll to Top */
@media (max-width: 768px) {
  .scroll-to-top {
    bottom: 20px;
    right: 20px;
    width: 45px;
    height: 45px;
    font-size: 1rem;
  }
}

@media (max-width: 480px) {
  .scroll-to-top {
    bottom: 15px;
    right: 15px;
    width: 40px;
    height: 40px;
    font-size: 0.9rem;
  }
}